I once weighed about 150 lbs, 5'4". Thick, but not terribly obese. I began taking Effexor and immediately began gaining weight. I began to change my diet, which had never been bad, to include lots of whole grains, fresh fruits & veggies, water instead of soda, etc. Even with all these changes, I gained 75 lbs in a period of about a year and a half. Now at 225 lbs and being no taller, I am definitely obese.
So, am I a glutton or is my obesity a disease? Or, perhaps, might this be a terribly complex issue with as many explanations as there are obese people?